EP 1433167 A2 20040630 - OPTICAL DATA STORAGE MEDIUM AND METHODS FOR READING AND WRITING SUCH A MEDIUM
Title (en)
OPTICAL DATA STORAGE MEDIUM AND METHODS FOR READING AND WRITING SUCH A MEDIUM
Title (de)
OPTISCHES DATENSPEICHERMEDIUM UND VERFAHREN ZUM LESEN UND SCHREIBEN EINES SOLCHEN MEDIUMS
Title (fr)
SUPPORT D'INFORMATION OPTIQUE ET PROCEDES DE LECTURE ET D'ECRITURE D'UN TEL SUPPORT
Publication
Application
Priority
- EP 02760490 A 20020828
- EP 01203348 A 20010905
- IB 0203546 W 20020828
Abstract (en)
[origin: WO03021580A2] An optical data storage medium (1) is described. The medium (1) has an optically readable information layer with a first optical reflectivity. An annular zone (12), outside the user data recording area (2) has at least one first type (5) of sector provided with a permanent information mark (7), having a second optical reflectivity. The zone has at least one second type (6) of sector provided with a recordable identification mark (8), having a third optical reflectivity different from the first optical reflectivity. Thus, a hybrid bar code like structure, with both permanent and recordable information requiring little radial space, is provided. Further, methods to read such permanent information marks (7) / recordable identification marks (8) and to write such recordable identifications marks (8) are disclosed.
IPC 1-7
IPC 8 full level
G11B 7/00 (2006.01); G11B 7/005 (2006.01); G11B 7/007 (2006.01); G11B 20/00 (2006.01)
CPC (source: EP KR US)
G11B 7/004 (2013.01 - KR); G11B 7/007 (2013.01 - KR); G11B 7/00736 (2013.01 - EP US); G11B 7/00745 (2013.01 - EP US); G11B 7/243 (2013.01 - KR); G11B 20/00086 (2013.01 - EP US); G11B 20/00876 (2013.01 - EP US)
Citation (search report)
See references of WO 03021580A2
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
WO 03021580 A2 20030313; WO 03021580 A3 20030605; AU 2002326095 A1 20030318; CA 2459256 A1 20030313; CN 1602520 A 20050330; EP 1433167 A2 20040630; JP 2005502152 A 20050120; KR 20040029139 A 20040403; MX PA04002062 A 20040708; TW I236666 B 20050721; US 2003048709 A1 20030313; US 7027383 B2 20060411
DOCDB simple family (application)
IB 0203546 W 20020828; AU 2002326095 A 20020828; CA 2459256 A 20020828; CN 02822035 A 20020828; EP 02760490 A 20020828; JP 2003525842 A 20020828; KR 20047003123 A 20020828; MX PA04002062 A 20020828; TW 91120147 A 20020904; US 23478602 A 20020904